Window construction.



E. H. LUNKEN. I WINDOW UONSTQUOTION. APPLIOATIOR rum) 1212.22. 1m.

Patented May 30, 1911.

r UNITED STATES PATENT OFFICE.

EDMUND H. L'O'NKEN, OF CHICAGO, ILLINOIS ASSIGNOR, BY MESNE ASSIGNMENTS,TO THELUNKENHEIMER COMPANY, A CORPORATION OF OHIO.

WINDOW CONSTRUCTION.

Specification of Letters Patent. Patented May 30, 1911.

Application filed April 22, 1910. Serial No. 557,063.

struction, of which the following is a specification. I

My present invention relates to lmprovements in window construction ofthe type shown in Letters Patent of the United States granted on thethird day of Novenr ber, 1908, to The Lunken Steel Window 00.,

and numbered 902979 and 902980, and also an application filed July 17,1908, Number 444140.

'The invention comprises the novel features of construction andcombination and arrangement of parts hereinafter described andparticularly set forth in the appended claims.

An embodiment of the invention is illustrated in the accompanyingdrawings, in wh1ch- Figure 1 is a perspective view of a win dow with theframe shown in dotted lines; Fig. 2 is a perspective view of a portionof the inner side of one face of the window frame showing the lowerguide strip as pushed in, and the upper portion of the lower sash swungslightly out of its normal vertical plane; Fig. 3 is a similar viewshowing the lower sash 1n 1ts vertical posi- 'tion and m engagement withthe guide strip; and Fig. 4 is a perspective view of the corner block.Fig. 5 is a detail.

I have found in practice, with a sliding and swinging sash such asdisclosed in the aforesaid patents, that after the guide strips havebeen disengaged from the sash and the sashes swung out of a verticalposition, when it is desired to return them to their normal .fore theguide strips engaged the grooves -might result in serious injury.

. The present invention has for its object, therefore, to provide meansfor securing such alinement automatically, and this is accomplished bythe construction shown in the drawing, and which will now be described.

Referring by reference characters to this drawing, the numeral 1designates the window frame or casing, and 2 and 3 the lower and uppersashes respectively, which are mounted to be capable of both a verticalsliding and a swinging movement upon their horizontal pivots, asdisclosed in said patents and application. The pivot pins 4 and 5suitably connected as by chains 6, move in the channels 7 and 8, and thesashes 2 and 3 are guided in their vertical sliding movement by havingtheir edge grooves or channels 2 and 3 engaged by the movable andstationary guide strips 9 and 9. While the movable guide strips may bemade to extend clear from the bottom to the top of the window frame, Imay prefer to have them extend only to a point slightly above the top ofthe lower sash, as indicated in Figs. 2 and 3, as this is all that isnecessary, and the upper guide strips 9 may be made stationary.

As will be readily understood by those familiar with the patentedconstructions, the guides are moved outward away from the sashes when asash is to be swung out of the vertical for cleaning or ventilation, soas to disengage the guide strips 9 from the grooves. When so disengaged,the sash may be swung into an inclined or horizontal position orreversed for the purpose of cleaning. It will be seen that before theguide strips can be again engaged with the sash, the sash must bebrought into accurate alinement therewith, and this requires some care,and were it endeavored to move the sash vertically before the ribs wereso engaged, damage to the contacting parts would result, and especiallyis this true where the guide strip is not continuous the entire lengthof the window frame, as shown in Figs. 2 and 3. In order to cause thesash, when swung upon its pivot into a vertical position to beautomatically stopped at the precise point where the strips and groovesare in alinement, I provide it at the upper corners with projections orstop pieces 10, which project far enough so that they strike against theface of the guide bar even when the guide bar 9 is pushed in out ofengagement with the groove of the sash. In Fig. 2 I have width of thechannels 7 and 8 and so that the side edges of the projections, in thevertical movement of the sashes, slide freely but in contact with bothwalls of the channels. Thus it will be seen that as soon as the sash hasmoved vertically sufliciently to carry the projection out of alinementwith the recess 11 it is accurately held in a vertical plane by theengagement of the projection with both walls of the channel.

As the frame or cover plate is preferably made of sheet metal theformation of a recess would leave an opening through the same and inorder to give a finished appearance I use a finishing piece or casting11 which has wings 11 designed to be riveted to the inner face of theframe or cover plate and ribs 11 of the thickness of the metal of whichthe frame or cover plate is formed.

The projection is conveniently formed as an integral part of a cornerblock 12, as shown in detail in Fig. 4. The corner block has projectingmembers 12 which are ra beted sufficiently to accommodate the sheetmetal walls of the hollow sash bars or rails 18, these members 12 havingthickened or enlarged parts provided with holes 12 through which arepassed rivets 14: for securing the sash bars thereto. It will beunderstood that the upper sash is provided with projections or stopsidentical in all respects with the lower sash, and operates in preciselythe same way, except that the upper sash would be pulled down beforebeing swung upon its horizontal pivots and the recess for the projectionof the upper sash is located on the outer side of the frame or coverplate directly opposite the recess for the projection of the lower sash.In

the case of the upper and lower sashes counconnected with the hinge pinfor supporting the sash, a movable guide strip adjoining the channel andhaving an interlocking connection with the edge of the sash, and aprojection at the side of the sash for abutting against the side wallsof the channel, substantially as described.

2. In combination a window frame member having a channel, a sash havinga horizontally disposed hinge pin located centrally of the sash andtraveling in said channel, means located within the channel andconnected with the hinge pin for support- 3. In combination a sheetmetal window 7 frame member having a channel and a movable guide stripor bar, a sash having a separable interlocking connection with the guidebar and having a hinge pin located in the channel, means located in thechannel and connected with the hinge pin for counterbalancing the sash,a projection on the side of the sash of a width corresponding to thewidth of said channel, said frame member having a cut away portion orrecess to permit the passage of said projection upon the swinging of thesash, and a finishing piece for said recess, substantially as described.

4. A sash for sliding and swinging windows comprising hollow sash bars,a corner block having angularly projecting portions entering said hollowsash bars, fastening means connecting the said projecting portions withthe hollow parts, and a guiding projection carried by one of the cornerblocks, substantially as described.

5. A sash for sliding and swinging windows comprising hollow sash bars,a corner block having angularly projecting portions entering said hollowsash bars, fastening means connecting the said projecting portions withthe hollow parts, and a guiding projection carried .by one of the cornerblocks, in combination with a window frame having a channel in whichsaid projection fits when the sash is in vertical position, said framehaving a cut away 130113101101 engaging the guide strips or ribs intheir sliding movement and being capable of disengagement therefrom topermit the pivoting of the sashes, lugs carried at the corners of thesashes of a width corresponding to the width of the channels forassisting in guiding the sashes in their vertical movement, the saidcasing being provided with recesses or cut away portions to permit thepassage of said lugs when the sashes are to be swung on their horizontalpivots, substantially as described.

7. In combination a Window frame member having stationa and movableguide strips or ribs and si e channels, a pair of sashes havinghorizontally disposed hinge pins traveling in said channels, meanslocated within the channels and connected with the hinge pins forsupporting the sashes, said pair of sashes engaging the guide strips orribs in their sliding movement and being capable of disengagement fromthe movable guide strips to permit the pivoting of the sashes, lugscarried at the corners of the sashes of a width corresponding to thewidth of the channels for assisting in guiding the sashes in theirvertical movement, the said casing being provided EDMUND H. LUNKEN.

Witnesses:

Gno. H. RIDDELL, E. F. LUNKEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

